Disc brake



FIG. 1 is a top, front, left perspective view of a disc brake, showing our new design;

FIG. 2 is a top, front, right perspective view thereof;

FIG. 3 is a top, rear, left perspective view thereof;

FIG. 4 is top, rear, right perspective view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is right side elevation view thereof. 

CLAIM The ornamental design for a disc brake, as shown and described. 